Patent US842375A successfully refreshed from Google Patents.
Patent US3207164A successfully refreshed from Google Patents.
US3207164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dishwasher heating system
Assignee: WASTE KING CORP
•
Filing: 1963-10-31
•
Granted: 1965-09-21
•
Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 John A Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:05
CPC Classifications
H; H05; H05B; H05B3/00; A; A47; A47L; A47L15/00; A47L15/42; A47L15/4285; A47L15/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
IN A DISHWASHER FOR WASHING, RINSING AND DRYING DISHES, THE COMBINATION OF: (A) A TUB ADAPTED TO CONTAIN DISHES TO BE WASHED, RINSED AND DRIED AND ADAPTED TO CONTAIN WATER FOR WASHING AND RINSING THEM; (B) AN ELECTRICAL RESISTANCE HEATING ELEMENT EXPOSED TO THE INTERIOR OF SAID TUBE ADJACENT THE BOTTOM THEREOF THE BELOW THE STATIC WATER LEVEL IN SAID TUBE WHEN IT CONTAINS WATER FOR WASHING AND RINSING DISHES THEREIN; (C) SAID HEATING ELEMENT HAVING A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE PROVIDING IT WITH A HIGH HEAT OUTPUT WHEN IT OPERATES AT A LOW TEMPERATURE AND PROVIDING IT WITH A LOW HEAT OUTPUT WHEN IT OPERATES AT A HIGH TEMPERATURE; (D) WHEREBY SAID HEATING ELEMENT HAS A HIGH HEAT OUTPUT WHEN IT IS EXPOSED TO WATER IN SAID TUB; AND (E) WHEREBY SAID HEATING ELEMENT HAS A LOW HEAT OUTPUT WHEN IT IS EXPOSED TO AIR IN SAID TUB DURING DRYING TO DISHES THEREIN, AND THUS AUTOMATICALLY LIMITS THE MAXIMUM TEMPERATURE OF THE STRUCTURE OF SAID TUB, OF DISHWASHER PARTS WITHIN SAID TUB, AND OF DISHES BEING DRIED THEREIN.
Claim 2
Dependent Claim
180 words
IN A DISHWASHER FOR WASHING, RINSING AND DRYING DISHES, THE COMBINATION OF: (A) A TUB ADAPTED TO CONTAIN DISHES TO BE WASHED, RINSED AND DRIED AND ADAPTED TO CONTAIN WATER FOR WASHING AND RINSING THEM; (B) AN ELECTRICAL RESISTANCE HEATING ELEMENT EXPOSED TO THE INTERIOR OF SAID TUBE ADJACENT THE BOTTOM THEREOF THE BELOW THE STATIC WATER LEVEL IN SAID TUBE WHEN IT CONTAINS WATER FOR WASHING AND RINSING DISHES THEREIN; (C) SAID HEATING ELEMENT HAVING A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE PROVIDING IT WITH A HIGH HEAT OUTPUT WHEN IT OPERATES AT A LOW TEMPERATURE AND PROVIDING IT WITH A LOW HEAT OUTPUT WHEN IT OPERATES AT A HIGH TEMPERATURE; (D) WHEREBY SAID HEATING ELEMENT HAS A HIGH HEAT OUTPUT WHEN IT IS EXPOSED TO WATER IN SAID TUB; AND (E) WHEREBY SAID HEATING ELEMENT HAS A LOW HEAT OUTPUT WHEN IT IS EXPOSED TO AIR IN SAID TUB DURING DRYING TO DISHES THEREIN, AND THUS AUTOMATICALLY LIMITS THE MAXIMUM TEMPERATURE OF THE STRUCTURE OF SAID TUB, OF DISHWASHER PARTS WITHIN SAID TUB, AND OF DISHES BEING DRIED THEREIN.
References Cited (Backward Citations)
US1101821A
Cited
US1974302A
Cited
US2081636A
Cited
US2781765A
Cited
US3041212A
Cited
US3049133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |